/*
*  Copyright 2019-2020 Zheng Jie
*
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
*  http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*/
package me.zhengjie.modules.zhaojiu.service.impl;

import me.zhengjie.modules.zhaojiu.domain.Class;
import me.zhengjie.utils.ValidationUtil;
import me.zhengjie.utils.FileUtil;
import lombok.RequiredArgsConstructor;
import me.zhengjie.modules.zhaojiu.repository.ClassRepository;
import me.zhengjie.modules.zhaojiu.service.ClassService;
import me.zhengjie.modules.zhaojiu.service.dto.ClassDto;
import me.zhengjie.modules.zhaojiu.service.dto.ClassQueryCriteria;
import me.zhengjie.modules.zhaojiu.service.mapstruct.ClassMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import me.zhengjie.utils.PageUtil;
import me.zhengjie.utils.QueryHelp;
import java.util.List;
import java.util.Map;
import java.io.IOException;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.LinkedHashMap;

/**
* @website https://el-admin.vip
* @description 服务实现
* @author Jiayin Wei
* @date 2021-12-09
**/
@Service
@RequiredArgsConstructor
public class ClassServiceImpl implements ClassService {

    private final ClassRepository classRepository;
    private final ClassMapper classMapper;

    @Override
    public Map<String,Object> queryAll(ClassQueryCriteria criteria, Pageable pageable){
        Page<Class> page = classRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder),pageable);
        return PageUtil.toPage(page.map(classMapper::toDto));
    }

    @Override
    public List<ClassDto> queryAll(ClassQueryCriteria criteria){
        return classMapper.toDto(classRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder)));
    }

    @Override
    @Transactional
    public ClassDto findById(Long classId) {
        Class class_ = classRepository.findById(classId).orElseGet(Class::new);
        ValidationUtil.isNull(class_.getClassId(),"Class","classId",classId);
        return classMapper.toDto(class_);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public ClassDto create(Class resources) {
        return classMapper.toDto(classRepository.save(resources));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(Class resources) {
        Class class_ = classRepository.findById(resources.getClassId()).orElseGet(Class::new);
        ValidationUtil.isNull( class_.getClassId(),"Class","id",resources.getClassId());
        class_.copy(resources);
        classRepository.save(class_);
    }

    @Override
    public void deleteAll(Long[] ids) {
        for (Long classId : ids) {
            classRepository.deleteById(classId);
        }
    }

    @Override
    public void download(List<ClassDto> all, HttpServletResponse response) throws IOException {
        List<Map<String, Object>> list = new ArrayList<>();
        for (ClassDto class_ : all) {
            Map<String,Object> map = new LinkedHashMap<>();
            map.put("名称", class_.getName());
            map.put("学生人数", class_.getStudentCount());
            map.put("培训期次ID", class_.getPeriodId());
            map.put("状态", class_.getEnabled());
            map.put("备注", class_.getRemark());
            map.put("创建者", class_.getCreateBy());
            map.put("更新者", class_.getUpdateBy());
            map.put("创建日期", class_.getCreateTime());
            map.put("更新时间", class_.getUpdateTime());
            list.add(map);
        }
        FileUtil.downloadExcel(list, response);
    }
}
